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added polygon selection!!

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This commit is contained in:
Marcel Paffrath 2015-10-13 18:41:55 +02:00
parent 07395802b7
commit d78b0f1cff
1 changed files with 166 additions and 23 deletions
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189
pylot/core/active/surveyPlotTools.py
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@ -1,4 +1,6 @@
import matplotlib.pyplot as plt
import math
import numpy as np
plt.interactive(True)
class regions(object):
@ -31,12 +33,14 @@ class regions(object):
self._y0 = []
self._x1 = []
self._y1 = []
self._polyx = []
self._polyy = []
self._allpicks = None
self.shots_found = {}
self.shots_for_deletion = {}
self._generateList()
def _onselect(self, eclick, erelease):
def _onselect_clicks(self, eclick, erelease):
'eclick and erelease are matplotlib events at press and release'
#print ' startposition : (%f, %f)' % (eclick.xdata, eclick.ydata)
#print ' endposition : (%f, %f)' % (erelease.xdata, erelease.ydata)
@ -46,26 +50,107 @@ class regions(object):
y0 = min(eclick.ydata, erelease.ydata)
y1 = max(eclick.ydata, erelease.ydata)
shots = self.findTracesInShotDict((x0, x1), (y0, y1))
shots, numtraces = self.findTracesInShotDict((x0, x1), (y0, y1))
print('Found %d traces in rectangle: %s' %(numtraces, shots))
key = self.getKey()
self.shots_found[key] = {'shots': shots,
'selection': 'rect',
'xvalues': (x0, x1),
'yvalues': (y0, y1)}
self.markRectangle((x0, x1), (y0, y1), key)
def _onselect_verts(self, verts):
x = verts[0][0]
y = verts[0][1]
self._polyx.append(x)
self._polyy.append(y)
self.drawPolyLine()
def _onpress(self, event):
if event.button == 3:
self.disconnectPoly()
def getKey(self):
if self.shots_found.keys() == []:
key = 1
else:
key = max(self.shots_found.keys()) + 1
return key
def drawPolyLine(self):
x = self._polyx
y = self._polyy
if len(x) >= 2 and len(y) >= 2:
plt.plot(x[-2:], y[-2:], 'k')
def drawLastPolyLine(self):
x = self._polyx
y = self._polyy
if len(x) >= 2 and len(y) >= 2:
plt.plot((x[-1], x[0]), (y[-1], y[0]), 'k')
def finishPolygon(self):
self.drawLastPolyLine()
x = self._polyx
y = self._polyy
self._polyx = []; self._polyy = []
key = self.getKey()
self.markPolygon(x, y, key = key)
shots, numtraces = self.findTracesInPoly(x, y)
self.shots_found[key] = {'shots': shots,
'distbin': (x0, x1),
'pickbin': (y0, y1)}
self.markRegion((x0, x1), (y0, y1), key)
'selection': 'poly',
'xvalues': x,
'yvalues': y}
print('Found %d traces in polygon: %s' %(numtraces, shots))
def markPolygon(self, x, y, key = None, color = 'grey', alpha = 0.1, linewidth = 1):
from matplotlib.patches import Polygon
poly = Polygon(np.array(zip(x, y)), color = color, alpha = alpha, lw = linewidth)
self.ax.add_patch(poly)
if key is not None:
self.ax.text((min(x) + (max(x) - min(x)) / 2), (min(y) + (max(y) - min(y)) / 2), str(key))
self.drawFigure()
def disconnectPoly(self):
self.ax.figure.canvas.mpl_disconnect(self._cid)
del self._cid
self.finishPolygon()
self._lasso.disconnect_events()
print('disconnected poly selection\n')
def disconnectRect(self):
self.ax.figure.canvas.mpl_disconnect(self._cid)
del self._cid
self._rectangle.disconnect_events()
print('disconnected rectangle selection\n')
def chooseRectangles(self):
'''
Activates matplotlib widget RectangleSelector.
'''
from matplotlib.widgets import RectangleSelector
print 'Select rectangle is active'
return RectangleSelector(self.ax, self._onselect)
print('Select rectangle is active')
self._cid = self.ax.figure.canvas.mpl_connect('button_press_event', self._onpress)
self._rectangle = RectangleSelector(self.ax, self._onselect_clicks)
return self._rectangle
def choosePolygon(self):
'''
Activates matplotlib widget LassoSelector.
'''
from matplotlib.widgets import LassoSelector
print('Select polygon is active')
self._cid = self.ax.figure.canvas.mpl_connect('button_press_event', self._onpress)
self._lasso = LassoSelector(self.ax, self._onselect_verts)
return self._lasso
def deselectLastSelection(self):
if self.shots_found.keys() == []:
print('No selection found.')
@ -74,17 +159,23 @@ class regions(object):
self.deselectSelection(key)
def deselectSelection(self, key, color = 'green', alpha = 0.1):
try:
if color is not None:
self.markRegion(self.shots_found[key]['distbin'],
self.shots_found[key]['pickbin'],
key = key, color = color, alpha = alpha, linewidth = 0)
value = self.shots_found.pop(key)
print('Deselected selection number %d'% key)
return
except:
if not key in self.shots_found.keys():
print('No selection found.')
return
if color is not None:
if self.shots_found[key]['selection'] == 'rect':
self.markRectangle(self.shots_found[key]['xvalues'],
self.shots_found[key]['yvalues'],
key = key, color = color, alpha = alpha,
linewidth = 1)
elif self.shots_found[key]['selection'] == 'poly':
self.markPolygon(self.shots_found[key]['xvalues'],
self.shots_found[key]['yvalues'],
key = key, color = color, alpha = alpha,
linewidth = 1)
value = self.shots_found.pop(key)
print('Deselected selection number %d'% key)
return
def _generateList(self):
allpicks = []
@ -101,7 +192,53 @@ class regions(object):
def getShotsForDeletion(self):
return self.shots_for_deletion
def findTracesInShotDict(self, (x0, x1), (y0, y1), picks = 'normal'):
def findTracesInPoly(self, x, y, picks = 'normal', highlight = True):
def dotproduct(v1, v2):
return sum((a*b) for a, b in zip(v1, v2))
def getlength(v):
return math.sqrt(dotproduct(v, v))
def getangle(v1, v2):
return np.rad2deg(math.acos(dotproduct(v1, v2) / (getlength(v1) * getlength(v2))))
def insidePoly(x, y, pickX, pickY):
angle = 0
epsilon = 10e-8
for index in range(len(x)):
xval1 = x[index - 1]; yval1 = y[index - 1]
xval2 = x[index]; yval2 = y[index]
angle += getangle([xval1 - pickX, yval1 - pickY], [xval2 - pickX, yval2 - pickY])
if 360 - epsilon <= angle <= 360 + epsilon: ### IMPROVE THAT??
return True
if len(x) == 0 or len(y) == 0:
print('No polygon defined.')
return
shots_found = {}; numtraces = 0
x0 = min(x); x1 = max(x)
y0 = min(y); y1 = max(y)
shots, numtracesrect = self.findTracesInShotDict((x0, x1), (y0, y1), highlight = False)
for shotnumber in shots.keys():
shot = self.shot_dict[shotnumber]
for traceID in shots[shotnumber]:
if shot.getFlag(traceID) is not 0:
pickX = shot.getDistance(traceID)
pickY = shot.getPick(traceID)
if insidePoly(x, y, pickX, pickY):
if not shotnumber in shots_found.keys():
shots_found[shotnumber] = []
shots_found[shotnumber].append(traceID)
if highlight == True:
self.highlightPick(shot, traceID)
numtraces += 1
self.drawFigure()
return shots_found, numtraces
def findTracesInShotDict(self, (x0, x1), (y0, y1), picks = 'normal', highlight = True):
'''
Returns traces corresponding to a certain area in the plot with all picks over the distances.
'''
@ -116,10 +253,12 @@ class regions(object):
if not shotnumber in shots_found.keys():
shots_found[shotnumber] = []
shots_found[shotnumber].append(traceID)
if highlight == True:
self.highlightPick(self.shot_dict[shotnumber], traceID)
numtraces += 1
print('Found %d traces: %s' %(numtraces, shots_found))
return shots_found
self.drawFigure()
return shots_found, numtraces
def highlightPick(self, shot, traceID, annotations = True):
'''
@ -197,11 +336,15 @@ class regions(object):
def markAllActiveRegions(self):
for key in self.shots_found.keys():
self.markRegion(self.shots_found[key]['distbin'],
self.shots_found[key]['pickbin'], key = key)
if self.shots_found[key]['selection'] == 'rect':
self.markRectangle(self.shots_found[key]['xvalues'],
self.shots_found[key]['yvalues'], key = key)
if self.shots_found[key]['selection'] == 'poly':
self.markPolygon(self.shots_found[key]['xvalues'],
self.shots_found[key]['yvalues'], key = key)
def markRegion(self, (x0, x1), (y0, y1), key = None, color = 'grey', alpha = 0.1, linewidth = 0.1):
def markRectangle(self, (x0, x1), (y0, y1), key = None, color = 'grey', alpha = 0.1, linewidth = 1):
'''
Mark a rectangular region on the axes.
'''